ELSGOLTS, L. <br/><br/>
Differential equations and the calculus of variations 

 - Moscow  Mir pub.  1977 
 - 440 p. 
<br/><br/><label>ISBN: </label>30867 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.35  / ELS